[B].
[C].
[D].
Answer: Option C
Explanation:
Go on multiplying 2 and adding 1 to get the next number.
So, 39 is wrong.
[B].
[C].
[D].
Answer: Option B
Explanation:
The pattern is 23, 33, 43, 53, 63, 73. But, 100 is not a perfect cube.
A. 6%
B. 8%
C. 10%
D. 12%
A. Rs 145
B. Rs 150
C. Rs 165
D. Rs 180
E. None of these
[B].
[C].
[D].
Answer: Option B
Explanation:
Let their investments be Rs. x for 14 months, Rs. y for 8 months and Rs. z for 7 months respectively.
Then, 14x : 8y : 7z = 5 : 7 : 8.
| Now, | 14x | = | 5 | 98x = 40y y = | 49 | x |
| 8y | 7 | 20 |
| And, | 14x | = | 5 | 112x = 35z z = | 112 | x = | 16 | x. |
| 7z | 8 | 35 | 5 |
| x : y : z = x : | 49 | x | : | 16 | x | = 20 : 49 : 64. |
| 20 | 5 |
[B].
[C].
[D].
Answer: Option B
Explanation:
1, 1 + 12 = 2, 2 + 22 = 6, 6 + 32 = 15, 15 + 42 = 31, 31 + 52 = 56, 56 + 62 = 92
Last number of given series must be 92 not 91.
A. 40 minutes
B. 1 hour
C. 1 hr 15 min
D. 1 hr 30 min